CORRUGATED BOARD WEB CUTTING DEVICE AND CORRUGATED BOARD MANUFACTURING DEVICE

The present invention is provided with: one slitter device which forms cutting lines (SL1_o, SL2_o, SL1_n, SL2_n) on a corrugated board web (24) in a conveying direction and produces a plurality of slitted webs (25); a plurality of cutoff devices which cut the slitted webs (25) in the width direction; a director device which separates the plurality of slitted webs (25) cut by the slitter device and distributes same to the plurality of cutoff devices; and a separation cutting device which is disposed on the upstream side of the director device, and forms separation cutting lines (CL), which are for separating the plurality of slitted webs (25) with the director device, between the slitted webs (24) of a new order and an old order, wherein the cutting operation is continued after the separation cutting device is stopped at the position of a separation cutting line (DL_n) of the new order.